package cn.tedu.v4;

import java.io.*;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;
/*
  Client 客户端--改成 Server 端模式 【优化】  15分  18:30完成

 */
public class Client {
    private Socket socket;
    private static final String HOST = "127.0.0.1";
    private static final Integer PORT =4545;
    private PrintWriter pw;
    private BufferedReader br;
    private String ip;

    public Client() {
        try {
            socket = new Socket(HOST, PORT);
            br = new BufferedReader(new InputStreamReader(socket.getInputStream(), "UTF8"));
            pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF8")), true);
        } catch (UnknownHostException e) {
            System.out.println("友情提示：IP传入错误");
        } catch (IOException e) {
            System.out.println("客户端链接服务器失败，提示：检查IP/端口");
        }
    }

    public static void main(String[] args) {
        new Client().start();
    }


    public void start() {
        try {
            new Thread(() -> {
                try {
                    String message;
                    while ((message = br.readLine()) != null) {
                        System.out.println("服务器端说：" + message);
                        System.out.println("客户端请输入：");
                    }
                } catch (IOException e) {
                    System.out.println("服务器端读入失败！");
                }
            }).start();

            Scanner input = new Scanner(System.in);
            while (true) {
                System.out.println("客户端请输入：");
                String line = input.nextLine();
                pw.println("客户端说：" + line);
            }
        } catch (NullPointerException e) {
            System.out.println("IP传入错误导致链接失败,也可能是端口号错了");

        } finally {
            if (br != null)
                try {
                    br.close();
                } catch (IOException e) {
                    System.out.println("客户端关闭失败~");
                }
            if (pw != null)
                pw.close();
            if (socket != null && !socket.isClosed()) {
                try {
                    socket.close();
                } catch (IOException e) {
                    System.out.println("通讯关闭失败~");
                }
            }
        }
    }

}
        
